Manifqlding-sheet



J. 0. FOSTER. MANIFOLDING SHEET.

(Application filed Mar. 9, 1899.)

Patented June 20, I899.

(No Model.)

I terial is dried,

NITED STATES JOHN 0. FOSTER, OF

PATENT QFFICE.

NEWARK, N W JERSEY. I

MAINIFOLDING-SHEET.

srncrmcn'rxon formingpart of Letters Patent No. 627,229, Application filed March 9, 1899- Serlal No. 708,325.

To all whom it may concern.-

Be it known that I, JOHN O. FOsTER, acitizen of the United States, residing at Newark, in the county of Essex and State of New J ersey, have invented an Improvement in Transfer-Sheets for Manifold or Duplicate Writing or Printing, of which the following is a specification.

'coated with the transfer material and the ad- V impression impression essary to tear oil succession.

jacent surface of the other being. coated with the receiving material, any desired number of copies can be duplicated and it is only necor remove these copies in While the present improvement-is espe cially adapted to'railroad aud express work, it is not in anyway limited, but can be employed for ordinary correspondence and can be used upon type-writers or printed upon, a duplicate or duplioatesbeing prod need by the .upon the original, whether that be made by the types in 'the'type- V, writer, by a pencil, pen, or otherwise.

In carrying out this place on the-back of the original sheet White or'l'ight-colored clay, chalk, or similar material in a pulverulent condition and'caused to adhere by suitable material, and upon the surface of the second sheet acontrastin g color is employed and with a surfacing material that is slightly adhesive, so that the pressure upon the original sheet causes the magnesia,-

her of the sheets,

writing or otherwise. The transfer material-may be composed of lent condition. adapted tothis pu rpose, and the same is mixed with an adhesive substance.

present invention I- dated June 20, 1899,

(No specimens.)

clay, or other material to be transferred to the surface of the second sheet and to adhere to the same firmly, and the materials preferably employed by me, as hereinafter set forth," are not Hence the transfer becomes permanent and reliable, and where the second sheet has a backing similar to the first sheet a transfer can be simultaneously made therefrom to a third sheet having a prepared surface, and

so on any desired number of transfers or manifold writing or neously effected.

In the drawing printing can be simultai have illustrated a numand it-js' to be understood that the surface of thisfirst sheet is prepared with the transfer-material and the front surface b of sheet 2 is prepared with where morethau one copy istoibe made simultaneously'the back surface, c1 of the second sheet 2is also prepared with transfer mate rial similar to the back of sheet surface d of the third sheet 3 is to be prepared with the receiving material and thesurface e with the transfer material, and so on any desired number of sheets can be prepared and employed, and while it is true that the first sheet 1 might have a receiving-surface, so that all the sheets would be alike, I find it generally advantageous to make the first'sheet 1 with a a pencil or pen or to be magnesia, clay, bronze-powder, or'othermaterial having more 0r.lesscolora'nd in apulveru- I find that china-clay is well I have found that about two per cent. of glue and about three per cent. of shellac form material for eausing the light-colored pulverulent material to adhere togethen and to the back of the sheet, and caoutchouc or india-rubber, resin, or similar material may be added and it is generally preferable-to dissolve the shellac 1n ammonia and to mix thematerials in a hot condition to a consistency a,

of cream and then to apply such material to the backs of the sheets, and-when the same easily influenced by moisture;

I of sheet lis tobe Written upon or printed and that the back surface a,

the receiving material, and

plain surface adapted toa very good 1 and the printed UP'OI y p loo ' the sheets.-

- cred transfer material before mentioned.

becomes dry it is adapted to the transfer work before mentioned. If it should be found that the light-colored pulverulent material rubs off upon the hands 7 or smears, the proportion of adhesive material can be increased. If, on the other hand, it is too hard for easy transfer, the proportion of glue or other adhesive material may be lessened; and this transfer material may be applied with a brush or by a roller to the backs of the sheets. The receiving-su rfaces of the sheets are to; be of a contrasting color to the transfer material. 'lhey may be black, brown, purple,- red; blue, green, or other color, and the film or receiving-coating is advantageously composed, in addition to the coloring-matter, ofresin, .stearic acid, paraffin, Japan wax, orresin and beeswax, such materials being melted together and applied to the surfaces of l find that paraffin in three parts, caontchonc in the comminuted form, rubber cement in one part, and resin and stearic acid in about equal parts produce a good receiving-surface when applied hot to the sur- -f ace of the paper and laid on evenly by rollors, brushes, or otherwise. Tissue-paper can t be easily prepared as the receiving-film, carebeing taken to fill in fine perforations and to coat the entire surface of the paper with uni-. formity.

if the sheet nilh the receiving upper surface or film is also to be used as a transfersheet, as illustrated at 2, 3, and 4, the backs of such sheets are coated withthe light-col- When'the first sheet iswrit-ten or printed upon, thepressure at the lines of the printing, writing, or drawing causes the transfer: material from the back of one sheet to'ad'here firmly to the adjacent surface of the next sheet, and when the sheets are separated the; transfer or manifold writing can be easily read by the contrast between the material that is caused to adhere from the back'of the first sheet upon the surface of the second. sheet, and so on, where there are more than two sheets made use of, and it will be'found that the light-colored coating upon the back of one sheet is substantially removed upon the linesof pressure to theadhering surface of the receiving-film and the transfer is not liable to become smeared or obliterated, and. if water is applied or an effortmadeldwfih 0d the record sufficient of the light-colored transfer material will be found adhering to the receiving-surface to become legible after. such surface dries.

I remark that a small per cent. of .bichro-l mate of potash or-tannic acid mixed into the. solution for the transfer-surface renders the glue insoluble, so that the same cannot easily be washed oif, and that the adhesive character.

I of the glue is not materially interfered with.

'I do not limit myself to the ingredients according to the circumstances'orf use.

Iclaim as my invention- 1. For manifold-writing, a sheet prepared with a light-colored transfer material upon the back, and a second sheet prepared with a darker-colored receivin g-surface, that is sufiicieutly adhesive to receive and hold the ma herein described, asthe same may be varied terial transferred from the back of the first sheet to the surface of the second sheet by pressure upon the surface of the. first sheet by a pen, pencil, types, stantially as set forth.

2. For manifold-writing a sheet of paper adapted to being written upon and having a coating upon the back of .pulverulent lightcolored material caused to adhere by a mixture of adhesive material, in combination with a second sheet having a surface of adhesivematerial to which the material from the back of the first is caused to adhere by the pressure in writing, printing or drawing, substantially as set forth.

3. A sheet of paper for manifold-writing having upon the back light-colored material in a pulverulent condition with an adhesive material mixed therewith, and adapted to adhere to a second sheet at the places where there is pressure from writing or printing upon the first sheet, substantially as specified. I 4. A transfer-sheet for manifold-writing having on the back a coating of clay in apuiverulent condition and an .adhesive material, such as glue, mixed of potassium ,ta-nnic acid or similar material to render such .glue substantially waterproof,

substantially as set forth.

5. A manifold-sheet coated on both-surfaces, the one surface having an adhesive mate'rial, such as a wax or resinousmaterial and the other surface having a coating of pulverulent material in a contrasting color and adhesive material to hold the coating upon-the back of the sheet, substantially as set-forth.'

6. For manifold-writing, a sheet of paper adapted to being written upon and having a coating upon rial and adhesive material, in combination with a second sheet having'a surface of ad hesive material of a color contrasting'to the color of the material that is transferredfrom the back of the first sheet by the pressure in writing, printing or drawing, substantially as I setforth.

7.. A manifold-sheet coated on the face with an adhesive material such as a wax or resinor otherwise, sub

therewith and bi'chromate the back of pulvernlent mateous mat crial and on the back with pnl-verulent 4 fied.

Signed by' me this 0th day of March,1899.

JOHN O. FOSTER.

'VVitnesses:

GEO. T. PINCKNEY, S. T. HAVILAND,

, and adhesive materials,substantially as speci- 

